Master Compass - Simrad GC80 Dual MK2 User Manual

Simrad GC80/85 Dual MK2 Gyro Compass
WARNING
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Master compass

Select a mounting location where the deck is horizontal, flat and with little
vibration, and where the pitch/roll motion is minimal.
It is also important to select a mounting location with sufficient space for
installation and service. Refer dimensional drawing, page 88 onwards.
1
Place the compass on or parallel to the vessel's horizontal centerline,
with the bow indication on the top of the case pointing towards the
vessel's bow.
2
Use the datum line at the front and the back of the compass to line
up the unit.
- It is possible to compensate for a small mounting offset by using
the heading offset feature as described in Adjusting True
heading, page 66.
- It is also possible to mount the master Gyro with a 180 degree
offset. The S1-7 on the MCC board must then be set to ON.
The Master Gyro must never be mounted with 90 degree
offset.
3
Remove the 4 screws holding the compass case and carefully lift the
case up and away.
4
Remove the cable inlet cover.
5
Fasten the compass to the deck using 4 bolts. The bolts should be
located at the center of the trails in order to later be able to adjust
the compass direction when the heading is tuned in. Refer
Adjusting True heading, page 66.
6
Remove strips and foam rubber from the shock absorbers, together
with all strips used to secure moving parts during transportation.
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